DE50205631D1 - Ferritic / martensitic steel with high strength and very fine structure - Google Patents

Ferritic / martensitic steel with high strength and very fine structure

Info

Publication number
DE50205631D1
DE50205631D1 DE50205631T DE50205631T DE50205631D1 DE 50205631 D1 DE50205631 D1 DE 50205631D1 DE 50205631 T DE50205631 T DE 50205631T DE 50205631 T DE50205631 T DE 50205631T DE 50205631 D1 DE50205631 D1 DE 50205631D1
Authority
DE
Germany
Prior art keywords
ferritic
high strength
fine structure
martensitic steel
degrees
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
DE50205631T
Other languages
German (de)
Inventor
Andreas Nuss
Dr-Ing Heller
Dr-Ing Engl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Stahl AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=31725389&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE50205631(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ThyssenKrupp Stahl AG filed Critical ThyssenKrupp Stahl AG
Application granted granted Critical
Publication of DE50205631D1 publication Critical patent/DE50205631D1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2201/00—Treatment for obtaining particular effects
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Catalysts (AREA)

Abstract

The following composition (wt. %) is cast into optionally flat ingots: C 0.05-2, Si up to 0.9, P up to 0.06, Mn 0.6-1.2, Al up to 0.05%, Cr 0.02-0.6, Nb up to 0.08%, Ti up to 0.08%, V up to 0.08%, Mo up to 0.4%, Cu up to 1%, Ni up to 1%, remainder Fe and inevitable impurities. The ingot is heated to hot-rolling temperature of 750-950 degrees C. The hot sheet is cooled to normal temperatures, up to 250 degrees C, at the rate of at least 10 K/s, for winding into rolls. An Independent claim is included for corresponding sheet.
DE50205631T 2002-09-11 2002-09-11 Ferritic / martensitic steel with high strength and very fine structure Revoked DE50205631D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02020294A EP1398390B1 (en) 2002-09-11 2002-09-11 Steel with a very fine ferritic and martensitic microstructure having a high tensile strength

Publications (1)

Publication Number Publication Date
DE50205631D1 true DE50205631D1 (en) 2006-04-06

Family

ID=31725389

Family Applications (1)

Application Number Title Priority Date Filing Date
DE50205631T Revoked DE50205631D1 (en) 2002-09-11 2002-09-11 Ferritic / martensitic steel with high strength and very fine structure

Country Status (4)

Country Link
EP (1) EP1398390B1 (en)
AT (1) ATE316157T1 (en)
DE (1) DE50205631D1 (en)
ES (1) ES2256378T3 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4470701B2 (en) * 2004-01-29 2010-06-02 Ｊｆｅスチール株式会社 High-strength thin steel sheet with excellent workability and surface properties and method for producing the same
EP1870483B1 (en) * 2005-03-31 2012-11-21 JFE Steel Corporation Hot-rolled steel sheet, method for production thereof and workedd article formed therefrom
CN101008066B (en) * 2006-01-27 2010-05-12 宝山钢铁股份有限公司 Hot rolling martensite steel plate with tensile strength higher than 1000Mpa and its production method
DE502006003833D1 (en) * 2006-10-30 2009-07-09 Thyssenkrupp Steel Ag Method for producing steel flat products from a silicon-alloyed multiphase steel
ATE432373T1 (en) * 2006-10-30 2009-06-15 Thyssenkrupp Steel Ag METHOD FOR PRODUCING FLAT STEEL PRODUCTS FROM A STEEL FORMING A MARTENSITIC STRUCTURE
DE102006053819A1 (en) * 2006-11-14 2008-05-15 Thyssenkrupp Steel Ag Production of a steel component used in the chassis construction comprises heating a sheet metal part and hot press quenching the heated sheet metal part
BR112012024642B1 (en) * 2010-03-29 2018-02-06 Arcelormittal Investigación Y Desarollo Sl STEEL PRODUCT BETTER RESISTANCE TO ATMOSPHERIC CORROSION IN A SALINE ENVIRONMENT AND USE OF A STEEL PRODUCT
WO2011135700A1 (en) * 2010-04-28 2011-11-03 住友金属工業株式会社 Hot rolled dual phase steel sheet having excellent dynamic strength, and method for producing same
MX369196B (en) 2012-08-21 2019-10-31 Nippon Steel Corp Star Steel material.
CN103667651B (en) * 2013-11-28 2016-03-09 安徽银力铸造有限公司 A kind of preparation method of automobile high-strength hot-rolled steel
MX2017008027A (en) 2014-12-19 2017-10-20 Nucor Corp Hot rolled light-gauge martensitic steel sheet and method for making the same.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466842A (en) * 1982-04-03 1984-08-21 Nippon Steel Corporation Ferritic steel having ultra-fine grains and a method for producing the same
JPS6134116A (en) * 1984-07-24 1986-02-18 Sumitomo Metal Ind Ltd Manufacture of high toughness hot rolled coil
CA2273334C (en) * 1996-11-28 2006-03-28 Nippon Steel Corporation High strength steels having high impact energy absorption properties and a method for producing the same
CN1080321C (en) * 1997-03-17 2002-03-06 新日本制铁株式会社 Dual-phase high-strength steel sheet having excellent dynamic deformation properties, and process for preparing same
TW426744B (en) * 1997-09-11 2001-03-21 Kawasaki Steel Co Hot rolled steel plate to be processed having hyper fine particles, method of manufacturing the same, and method of manufacturing cold rolled steel plate
DE19911287C1 (en) * 1999-03-13 2000-08-31 Thyssenkrupp Stahl Ag Process for producing a hot strip

Also Published As

Publication number Publication date
ES2256378T3 (en) 2006-07-16
ATE316157T1 (en) 2006-02-15
EP1398390B1 (en) 2006-01-18
EP1398390A1 (en) 2004-03-17

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: THYSSENKRUPP STEEL AG, 47166 DUISBURG, DE

8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: THYSSENKRUPP STEEL EUROPE AG, 47166 DUISBURG, DE

8331 Complete revocation